Here is the full list of all 32 SOUTH PARK: SNOW DAY! achievements.
Defeat 10 Vampire Kids.
Start a run with someone who has Socially Transmitted Distraction. They say it started in a lab out in California somewhere.
Kill 50 Pooplets in one battle.
Kill an enemy with an aerial attack after floating with Moon Jump for at least a second.
Use Cheesy Zombies on a Necro.
Revive an ally with a Cheesed Necro.
Find and activate every Rulebook across an entire run, and live to tell the tale.
While Invisible, defeat a human boss with a melee attack.
Kill an Ent with Bleeding damage.
Finish a map with one extra Rulebook applied.
Defeat Stan within 25 minutes of starting your run.
Toot on an enemy faction leader while dead.
Damage an enemy in your Event Horizon using your own projectile.
Defeat Mr. Hankey.
Defeat Cartman in the foothills.
Defeat Cartman without damaging any stationary decoy.
Defeat Liane at the church.
Kill 3 enemies with cannonballs.
Increase the rarity of 10 upgrades to Rare or better.
Defeat Stan at the playground.
Become an honorary Marshwalker.
Defeat Princess Kenny at the Town Square Ampitheater.
Fart on 3 Assassins using Fart Escape.
Set 4 or more enemies on fire with no more than 2 seconds in between each.
Defeat 10 enemies with weapon strikes from the air.
Dance while reviving an ally.
Defeat Kyle in his sacred grove.
Heal 150 points of damage with a single Healing Totem across any number of allies.
Acquire an Ultra-Legendary Upgrade.
Acquire a Legendary Upgrade.
Make at least 4 enemies Vomit with no more than 1 second in between each.
Relieve the buildup of natural pressures in the gastrointestinal tract through quick, albeit semi-musical, bursts of gaseous release.